As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OKC - FLIGHT 4188 - THE FLIGHT RETURNED TO GATE WHEN AN OVERHEAD PANEL IN THE CABIN FELL DOWN DURING THE TAXI OUT. MAINTENANCE INSPECTED THE OVERHEAD AND THEN RESECURED THE PANEL. OPERATIONAL CHECKS WERE GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.